CN103894549A - Integral precision casting method for metal slot drum blank of automatic winder - Google Patents

Integral precision casting method for metal slot drum blank of automatic winder Download PDF

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Publication number
CN103894549A
CN103894549A CN201410144403.3A CN201410144403A CN103894549A CN 103894549 A CN103894549 A CN 103894549A CN 201410144403 A CN201410144403 A CN 201410144403A CN 103894549 A CN103894549 A CN 103894549A
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China
Prior art keywords
wax
water
ceramic core
pattern
soluble ceramic
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Pending
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CN201410144403.3A
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Chinese (zh)
Inventor
范沁漪
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TONGLING JIAMAO NEW MATERIAL TECHNOLOGY Co Ltd
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TONGLING JIAMAO NEW MATERIAL TECHNOLOGY Co Ltd
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Priority to CN201410144403.3A priority Critical patent/CN103894549A/en
Publication of CN103894549A publication Critical patent/CN103894549A/en
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Abstract

The invention discloses an integral precision casting method for a metal slot drum blank of an automatic winder. The integral precision casting method comprises the following steps: (1) manufacturing a water-soluble ceramic core with the shape corresponding to the interior shape of a metal slot drum, preserving heat for 30-50 minutes at the temperature of 200+/- 10 DEG C, discharging the water-soluble ceramic core out of a furnace, carrying out air cooling to room temperature; coating the external surface of the water-soluble ceramic core with an organic waterproof coating and drying; (2) putting the water-soluble ceramic core into a wax injection mould, closing the mould and injecting wax material into the wax injection mould through a wax injection opening to form a wax mould, cooling the wax mould to room temperature and opening the wax injection mould, and then taking out the wax mould coated with the water-soluble ceramic core; (3) welding the wax mould coated with the water-soluble ceramic core to be a wax mould set for casting; (4) coating the wax mould set with fireproof material, and then de-waxing the wax mould set to form a mould shell, and roasting the mould shell for later use; (5) melting cast iron, casting the cast iron into a metal slot drum casting, cleaning the mould shell and removing a casting system; (6) dipping the metal slot drum cast into hot water to soak, and taking out the metal slot drum blank after the water-soluble ceramic core is defeated and dispersed.

Description

The overall fine casting method of automatic winder metal drum blank
Technical field
The present invention relates to automatic winder metal drum casting technology field, especially relate to a kind of overall fine casting method of automatic winder metal drum blank.
Background technology
Metal drum is the important accessory of textile industry automatic winder, along with the development of China's textile industry, demand to automatic winder metal drum significantly rises, during 12, national appearance policy will update to reach advanced world standards for the frame of China, and the demand of metal drum will be larger.
As depicted in figs. 1 and 2, the bathtub construction complexity of metal drum, left-right rotary reciprocating spiral groove; Each point pitch difference; Each point groove width difference; Each point groove depth difference; Each point groove tilt angle difference; The cross sectional shape difference of each point flute profile, part groove section is vase-like cross section.Exactly because above technological difficulties, can produce the producer conforming to quality requirements little, major technique is monopolized by offshore company, and domestic metal drum import relies degree very large, and metal drum has become " bottleneck " that hinder China's automatic winder localization process.
The technical requirement of metal drum complexity and wide interests space, attracting numerous enterprise participation research and development always, many strong enterprises adopt super molding process to solve the moulding problem of metal drum groove, but after trial many times, all end in failure, in the manufacture of tracing it to its cause as mould, can't resolve the problem of falling withdrawing pattern of groove drum channel portions.
The die sinking technology that the casting technique of existing metal drum adopts and axially splits, water-soluble fuse combines with loose piece, the method of the pressure injection wax-pattern that wherein loose piece employing speciality loose piece and hard loose piece combine, solve the problem of falling withdrawing pattern of metal drum vase-like flute profile part, successfully develop the pressure wax-pattern tool that meets metal drum flute profile, then adopted silica sol precision casting technique monoblock cast metal drum.But the casting technique of existing metal drum has the following disadvantages: 1, what groove drum interior shape adopted is that the water-soluble fuse that water miscible urea material is made into carrys out assist formation, this material can not bear the cast of high-temperature metal, urea fuse is the shaping stage for groove drum wax-pattern, the wax-pattern that is surrounded by urea fuse is put into water fuse is dissolved completely, the part of the molten mistake of urea fuse forms the wax-pattern inner chamber consistent with metal drum, therefore the inner chamber of groove drum wax-pattern is to be successively coated with Ludox fireproof coating dry together with profile, dewaxing, formwork is made in roasting, for complex-shaped metal drum, its inner chamber is except the complicated shape corresponding with the groove of profile, owing to also having the structure influence of the mechanical aspects such as dead eye, therefore shape is more complicated, extremely be unfavorable for being evenly coated with of Ludox fireproof coating, also be unfavorable for the dry and sclerosis of coating, thereby the quality that has a strong impact on formwork affects the casting quality of metal drum,
2, form urea fuse meeting deliquescence voluntarily in the air with certain humidity of groove drum interior shape, therefore higher to the humidity requirement of operating environment, even otherwise a small amount of local deliquescence and distortion all can affect groove drum interior shape, thereby affect evenness of wall thickness and the uniformity of groove drum, affect the stability of casting quality, bring difficulty also to the dynamic balance running in fine finishining stage;
3, after Ludox fireproof coating solidifies sintering, formwork elevated temperature strength is really very high, very favourable to the cast of metal drum, but after casting of metals, its collapsibility is very poor, be difficult to be cleared at complicated metal drum inner chamber, this has not only increased workload and the cost of cleaning, production efficiency is low, the more important thing is and be difficult to clean out, if there is a small amount of formwork to remain in the inner somewhere of groove drum, split away off again until use on the machine in process, its consequence is the dynamic balance performance that has a strong impact on groove drum, groove drum under running up may produce high vibration and cause equipment fault, serious meeting causes accident.
Summary of the invention
The technical problem to be solved in the present invention is, the overall fine casting method of existing automatic winder metal drum blank adopts water soluble urea fuse to carry out assistant formation, groove drum wax-pattern interior shape after the molten mistake of urea fuse is very complicated, extremely be unfavorable for being evenly coated with of Ludox fireproof coating, also be unfavorable for the dry and sclerosis of coating, thereby affect production efficiency and the casting quality of metal drum; Humidity requirement to operating environment is higher; After casting of metals its collapsibility very poor, be difficult to cleaning, a kind of overall fine casting method of automatic winder metal drum blank is provided for this reason.
Technical scheme of the present invention is: the overall fine casting method of automatic winder metal drum blank, is characterized in that it comprises the following steps:
(1), produce the water-soluble ceramic core corresponding with metal drum interior shape, at 200 ± 10 DEG C, be incubated 30-50 minute and come out of the stove, air cooling is to room temperature; Apply organic water-repellent paint at described water-soluble ceramic core outer surface, stand-by after drying;
(2), described water-soluble ceramic core is inserted and penetrated in wax-pattern, after matched moulds, by penetrating wax mouth, wax material is injected in wax-pattern, formed wax-pattern, be cooled to room temperature and open and penetrate wax-pattern, take out the wax-pattern that is coated with water-soluble ceramic core;
(3), the wax-pattern that is coated with water-soluble ceramic core is welded into the wax-pattern module of casting use;
(4), on described wax-pattern module, be coated with refractory material, more described wax-pattern module dewaxing is formed to formwork, formwork roasting is stand-by;
(5), Castiron Melting, pour into metal drum foundry goods, formwork cleaning, remove running gate system;
(6), described metal drum foundry goods is immersed in hot water and soaked, wait the defeated and dispersed rear taking-up metal drum blank of water-soluble ceramic core.
Described in such scheme, the percentage by weight of water-soluble ceramic core material component is: refractory aggregate 100%, tertiary sodium phosphate 8%, binding agent 3% and water 20%, described binding agent is potter's clay or dextrin.
In such scheme step (2), water-soluble ceramic core is inserted and penetrate while penetrating wax-pattern processed in wax-pattern, water-soluble ceramic core end is provided with and penetrates locating surface corresponding to confined planes in wax-pattern.
After first the two ends core print of water-soluble ceramic core being destroyed in step (6) described in such scheme, then immerse in the hot water of 60-80 DEG C and soak.
The invention has the beneficial effects as follows that water-soluble ceramic core can bear the high temperature of cast iron cast, therefore wax-pattern pressure injection is shaped and water-soluble ceramic core can be continued to stay in wax-pattern, to form the inner chamber of metal drum, until after groove drum cast; Water-soluble ceramic core can toast dry sclerosis in advance, and the protection of coating water resistant coating, so just can avoid groove drum wax-pattern inner chamber to be difficult to be coated with coating and problem dry, that affect groove drum casting quality; Water-soluble ceramic core can be defeated and dispersed in hot water, after after groove drum cast, foundry goods being soaked in hot water together with water-soluble ceramic core, just can remove easily the water-soluble ceramic core of groove drum inner chamber; The defeated and dispersed of water-soluble ceramic core need to absorb enough moisture content, to general humid air tolerance more by force, can not deliquescence, therefore can under common humidity environment condition, operate, can not affect the quality of groove drum.
Brief description of the drawings
Fig. 1 is metal drum external structure schematic diagram of the present invention;
Fig. 2 is metal drum internal structure schematic diagram of the present invention;
Fig. 3 is the water-soluble ceramic core organigram of the present invention;
Fig. 4 is that the present invention penetrates wax-pattern organigram;
Fig. 5 is that the present invention penetrates the left mould organigram of wax-pattern.
Fig. 6 is the groove drum wax-pattern organigram of the coated water-soluble ceramic core of the present invention;
Fig. 7 is wax-pattern modular construction schematic diagram of the present invention;
In figure, 1, little core print, 2, water-soluble ceramic core, 3, large core print, 4, locating surface, 5, confined planes, 6, large core print seat, 7, penetrate wax mouth, 8, little core print seat, 9, penetrate wax-pattern, 10, wax-pattern.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
Embodiment 1:(1), produce the water-soluble ceramic core 2 corresponding with metal drum interior shape, the constituent percentage by weight of water-soluble ceramic core is: refractory aggregate 100%, tertiary sodium phosphate 8%, potter's clay 3% and water 20%,, at 190 DEG C, being incubated 30min and coming out of the stove, air cooling is to room temperature; Apply organic water-repellent paint at water-soluble ceramic core outer surface, stand-by after drying;
(2), water-soluble ceramic core is inserted and penetrated in wax-pattern 9, as shown in Fig. 3, Fig. 4, Fig. 5, by the little core print 1 of ceramic core, large core print 3, locating surface 4 respectively with to penetrate the little core print seat 8 of wax-pattern, large core print seat 6, confined planes 5 corresponding, after matched moulds, by penetrating wax mouth 7, wax material is injected in wax-pattern, form wax-pattern 10, be cooled to room temperature and open and penetrate wax-pattern, take out wax-pattern;
(3), the wax-pattern that is coated with water-soluble ceramic core is welded into as shown in Figure 6 to the wax-pattern module of casting use, as shown in Figure 7;
(4), on wax-pattern module, be coated with refractory material and dry after, then by the dewaxing of wax-pattern module, now water-soluble ceramic core forms the finish cast die shell of groove drum together with peripheral refractory material, formwork roasting is stand-by;
(5), by formwork Castiron Melting, pour into metal drum foundry goods, formwork cleaning, remove running gate system;
(6) after, first the two ends core print of water-soluble ceramic core being destroyed, then metal drum foundry goods is immersed in 60 ° of hot water and soaked, the defeated and dispersed rear taking-up metal drum blank of water-soluble ceramic core.
Embodiment 2:(1), produce the water-soluble ceramic core 2 corresponding with metal drum interior shape, the constituent percentage by weight of water-soluble ceramic core is: refractory aggregate 100%, tertiary sodium phosphate 8%, dextrin 3% and water 20%, at 210 DEG C, be incubated 50min and come out of the stove, air cooling is to room temperature; Apply organic water-repellent paint at water-soluble ceramic core outer surface, stand-by after drying;
(2), water-soluble ceramic core is inserted and penetrated in wax-pattern 9, as shown in Fig. 3, Fig. 4, Fig. 5, by the little core print 1 of ceramic core, large core print 3, locating surface 4 respectively with to penetrate the little core print seat 8 of wax-pattern, large core print seat 6, confined planes 5 corresponding, after matched moulds, by penetrating wax mouth 7, wax material is injected in wax-pattern, form wax-pattern 10, be cooled to room temperature and open and penetrate wax-pattern, take out wax-pattern;
(3), the wax-pattern that is coated with water-soluble ceramic core is welded into as shown in Figure 6 to the wax-pattern module of casting use, as shown in Figure 7;
(4), on wax-pattern module, be coated with refractory material and dry after, then by the dewaxing of wax-pattern module, now water-soluble ceramic core forms the finish cast die shell of groove drum together with peripheral refractory material, formwork roasting is stand-by;
(5), by formwork Castiron Melting, pour into metal drum foundry goods, formwork cleaning, remove running gate system;
(6) after, first the two ends core print of water-soluble ceramic core being destroyed, then metal drum foundry goods is immersed in 80 ° of hot water and soaked, the defeated and dispersed rear taking-up metal drum blank of water-soluble ceramic core.
Water-soluble ceramic core in the present invention is for cast iron and the metal material that pouring temperature is close with it; When being the metal material that pouring temperature is lower (as metal alloys such as copper, aluminium, magnesium, zinc), it can be water-soluble gypsum core etc.; When for the higher metal material of pouring temperature (as titanium alloy, steel alloy), it can be water soluble salt ceramic core etc.
Organic waterproof coating in the present invention can be asphalt waterproofing paint, high polymer asphalt waterproofing paint, synthesising macromolecule copolymer water-repellent paint etc., refractory aggregate can be middle aluminium refractory aggregate or high-alumina refractory aggregate, can be coarse aggregate or fine aggregate, refractory material can be siliceous class, aluminosilicate property class, corundum class, magnesia, magnesium is calcareous, magnalium matter, magnesium are siliceous etc.
By reference to the accompanying drawings the present invention is exemplarily described above; obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.

Claims (5)

1. the overall fine casting method of automatic winder metal drum blank, is characterized in that it comprises the following steps:
(1), produce the water-soluble ceramic core corresponding with metal drum interior shape, at 200 ± 10 DEG C, be incubated 30-50 minute and come out of the stove, air cooling is to room temperature; Apply organic water-repellent paint at described water-soluble ceramic core outer surface, stand-by after drying;
(2), described water-soluble ceramic core is inserted and penetrated in wax-pattern, after matched moulds, by penetrating wax mouth, wax material is injected in wax-pattern, formed wax-pattern, be cooled to room temperature and open and penetrate wax-pattern, take out the wax-pattern that is coated with water-soluble ceramic core;
(3), the wax-pattern that is coated with water-soluble ceramic core is welded into the wax-pattern module of casting use;
(4), on described wax-pattern module, be coated with refractory material, more described wax-pattern module dewaxing is formed to formwork, formwork roasting is stand-by;
(5), Castiron Melting, pour into metal drum foundry goods, formwork cleaning, remove running gate system;
(6), described metal drum foundry goods is immersed in hot water and soaked, wait the defeated and dispersed rear taking-up metal drum blank of water-soluble ceramic core.
2. the overall fine casting method of automatic winder metal drum blank as claimed in claim 1, is characterized in that the percentage by weight of described water-soluble ceramic core material component is: refractory aggregate 100%, tertiary sodium phosphate 8%, binding agent 3% and water 20%.
3. the overall fine casting method of automatic winder metal drum blank as claimed in claim 2, is characterized in that described binding agent is potter's clay or dextrin.
4. the overall fine casting method of automatic winder metal drum blank as claimed in claim 1, it is characterized in that: in described step (2), water-soluble ceramic core is inserted and penetrate while penetrating wax-pattern processed in wax-pattern, water-soluble ceramic core end is provided with and penetrates locating surface corresponding to confined planes in wax-pattern.
5. the overall fine casting method of the automatic winder metal drum blank as described in as arbitrary in claim 1-4, after it is characterized in that first the two ends core print of water-soluble ceramic core being destroyed in described step (6), then immerses in the hot water of 60-80 DEG C and soaks.
CN201410144403.3A 2014-04-11 2014-04-11 Integral precision casting method for metal slot drum blank of automatic winder Pending CN103894549A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999037A (en) * 2015-08-21 2015-10-28 东方电气集团东方汽轮机有限公司 Concreting system for thin-walled cylindrical part and precision casting formation method
CN106944592A (en) * 2017-04-28 2017-07-14 鹰普航空零部件(无锡)有限公司 Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting
CN107199389A (en) * 2017-06-12 2017-09-26 中国航发哈尔滨东安发动机有限公司 One kind realizes Mg alloy castings oil circuit repair method by Water-soluble ceramic
CN112139451A (en) * 2020-09-23 2020-12-29 河南正旭科技股份有限公司 Investment casting process of complex thin-wall hollow aluminum alloy aviation part
CN114014094A (en) * 2022-01-10 2022-02-08 南通衡利莱机械设备有限公司 Automatic change cone winder

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CN87102126A (en) * 1987-03-17 1988-03-30 哈尔滨工业大学 Water soluble core for cast-steel piece
CN1749644A (en) * 2004-09-17 2006-03-22 薛铁山 Integrated high temperature high efficiency soundwave and blower and its producing method
EP1705680A1 (en) * 2005-03-25 2006-09-27 Osram-Sylvania Inc. Apparatus, method for molding a ceramic discharge vessel and removing the core, and the core
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999037A (en) * 2015-08-21 2015-10-28 东方电气集团东方汽轮机有限公司 Concreting system for thin-walled cylindrical part and precision casting formation method
CN106944592A (en) * 2017-04-28 2017-07-14 鹰普航空零部件(无锡)有限公司 Water-soluble wax and Water-soluble ceramic core combine the application in aluminium alloy model casting
CN107199389A (en) * 2017-06-12 2017-09-26 中国航发哈尔滨东安发动机有限公司 One kind realizes Mg alloy castings oil circuit repair method by Water-soluble ceramic
CN112139451A (en) * 2020-09-23 2020-12-29 河南正旭科技股份有限公司 Investment casting process of complex thin-wall hollow aluminum alloy aviation part
CN114014094A (en) * 2022-01-10 2022-02-08 南通衡利莱机械设备有限公司 Automatic change cone winder
CN114014094B (en) * 2022-01-10 2022-03-11 南通衡利莱机械设备有限公司 Automatic change cone winder

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Application publication date: 20140702